Billy,
Not every Truckmounter. As you might have seen in a post of mine a couple of months ago, I finally got the official line on it from the local Trade Effluent Officer after I had someone complain about my dumping water down a sewer drain. Turned out as I already knew, I was legaly entitles to use it. I had to explain all this again to our local Enviroment Officer just last week, after he phoned me to tell me he had received a complaint (Anonymously) about me dumping waste water down a drain. He was okay about it after I told him I had already gone through all this with the Trade Effluent guy, but it just shows that there people out there, who could cause trouble for you if you dont follow the rules.
Dave.